Once you login to system with your credential follow the below mentioned steps:
Once you login to system click on Lists >> Create Lists
On clicking Create List. A form would appear and fill the required details. Note fields with red asterisk (*) is mandatory
Login >> Lists
Under the lists the list created using above steps would appear. User needs to click on list name and then under Subscribers dropdown you would see option to Import the subscribers.
You can download the Sample CSV file to understand the format.
Select the csv file from your computer by clicking on the + sign and then click on import to upload all your contacts to the list.
